Sherwin-Williams Transgard TG110 is a zinc phosphate pigmented 2-pack epoxy temporary protective primer, used as a temporary protective for steel surfaces prepared by abrasive blast cleaning.
Transgard TG110 is suitable for use in conjunction with cathodically protected steel. It is also suitable for fabrication and for overcoating with most paints in common use except high content metallic zinc products.
- Highways Agency Item No. 110.
Indefinitely overcoatable with epoxy systems provided the surfaces to be coated have been suitably cleaned.
For optimum performance use round steel shot and blast clean to Sa21⁄2 BSEN ISO 8501-1:2007). Average surface profile in the range 30-50 microns.
Ensure surfaces to be coated are clean, dry and free from all surface contamination.
Application Conditions & Overcoating
Epoxy paints should preferably be applied at temperatures in excess of 10°C. In conditions of high relative humidity, ie 80-85% good ventilation conditions are essential. Substrate temperature shall be at least 3°C above the dew point and always above 0°C.
At application temperatures below 10°C, drying and curing times will be significantly extended, and spraying characteristics may be impaired.
Application at ambient air temperatures below 5°C is not recommended.
In order to achieve optimum water and chemical resistance, temperature needs to be maintained above 10°C during curing.
If it is desired to overcoat outside the times stated on the data sheet, please seek advice of Technical Team.
Drying times, curing times and pot life should be considered as a guide only.
The curing reaction of epoxies commences immediately the two components are mixed, and since the reaction is dependent on temperature, the curing time and pot life will be approximately halved by a 10°C increase in temperature and doubled by a 10°C decrease in temperature.
Epoxy Coatings - Tropical Use
Epoxy paints at the time of mixing should not exceed a temperature of 35°C. At this temperature the pot life will be approximately halved. Use of these products outside of the pot life may result in inferior adhesion properties even if the materials appear fit for application. Thinning the mixed prod- uct will not alleviate this problem.
The maximum air and substrate temperature for application is 50°C providing conditions allow satisfactory application and film formation. If the air and substrate temperatures exceed 50°C and epoxy coatings are applied under these conditions, paint film defects such as dry spray, bubbling and pinholing etc. can occur within the coating.
Numerical values quoted for physical data may vary slightly from batch to batch.